WO2016074399A1 - Échangeur de chaleur à écoulement parallèle et climatiseur pourvu de celui-ci - Google Patents

Échangeur de chaleur à écoulement parallèle et climatiseur pourvu de celui-ci Download PDF

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Publication number
WO2016074399A1
WO2016074399A1 PCT/CN2015/074393 CN2015074393W WO2016074399A1 WO 2016074399 A1 WO2016074399 A1 WO 2016074399A1 CN 2015074393 W CN2015074393 W CN 2015074393W WO 2016074399 A1 WO2016074399 A1 WO 2016074399A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
parallel flow
flat tube
flow heat
heat exchange
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Application number
PCT/CN2015/074393
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English (en)
Chinese (zh)
Inventor
李丰
岑晓维
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广东美的制冷设备有限公司
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Application filed by 广东美的制冷设备有限公司 filed Critical 广东美的制冷设备有限公司
Publication of WO2016074399A1 publication Critical patent/WO2016074399A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular

Definitions

  • the present invention relates to the field of refrigeration equipment technology, and in particular to a parallel flow heat exchanger and an air conditioner having the same.
  • the parallel flow porous microchannel heat exchanger is an all-aluminum heat exchanger, which is widely used as a new type of heat exchanger for air conditioners.
  • air conditioners At present, whether it is automobile air conditioner or household air conditioner industry, most manufacturers use flat tubes of 16mm width and above, but parallel flow heat exchangers have higher cost, most of them are used for 2p and above models, and very small power machines are very It is difficult to have a cost advantage. With the current copper price, the traditional flat tube is difficult to replace the copper tube heat exchanger. The main performance is that although the parallel flow condenser is better than the copper tube heat exchanger, the cost is higher.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention proposes a parallel flow heat exchanger having the advantages of simple structure and high heat exchange efficiency.
  • the present invention also proposes an air conditioner having the parallel flow heat exchanger described above.
  • Two collecting pipes, the two collecting pipes are disposed at two ends of the flat pipe, and two ends of each of the heat exchange channels are respectively connected with the corresponding collecting pipes; and a plurality of heat dissipating fins a sheet, the plurality of heat dissipating fins being disposed between two adjacent flat tubes.
  • the material reduces the production cost, improves the heat exchange efficiency of the parallel flow heat exchanger, and makes the parallel flow heat exchanger suitable for the low-power air conditioner, thereby expanding the application range of the parallel flow heat exchanger.
  • each of the flat tubes has a height b and satisfies: 1.3 ⁇ b ⁇ 1.4 mm.
  • the inner circumferences of the two adjacent heat exchange channels The shortest distance between the walls is c and satisfies: 0.2 ⁇ c ⁇ 0.28 mm, and the side surface of the flat tube perpendicular to the height direction of the flat tube is a first side, the first side and the heat exchange passage
  • the shortest distance between the inner peripheral walls is d and satisfies: 0.23 ⁇ d ⁇ 0.31 mm, and the side surface of the flat tube perpendicular to the width direction of the flat tube is a second side, and the second side is replaced with the second side
  • the shortest distance between the inner peripheral walls of the hot aisle is e and satisfies: 0.2 ⁇ e ⁇ 0.7 mm.
  • the shortest distance between the inner peripheral walls of the two adjacent heat exchange passages is c, and the c satisfies: 0.23 ⁇ c ⁇ 0.25 mm.
  • a side surface of the flat tube perpendicular to a height direction of the flat tube is a first side, and between the first side surface and an inner peripheral wall of the heat exchange passage
  • the shortest distance is d, and the d satisfies: 0.26 ⁇ d ⁇ 0.28 mm.
  • a side surface of the flat tube perpendicular to a width direction of the flat tube is a second side, and between the second side surface and an inner peripheral wall of the heat exchange passage
  • the shortest distance is e, and the e satisfies: 0.4 ⁇ e ⁇ 0.5 mm.
  • the number of the heat exchange channels is N and satisfies: 8 ⁇ N ⁇ 10.
  • the header has an outer diameter of m and satisfies: 14 ⁇ m ⁇ 16 mm.
  • the collector has a wall thickness of n and satisfies: 1.0 ⁇ n ⁇ 1.2 mm.
  • the width of the heat dissipating fins is greater than or equal to the width of the flat tube.
  • the heat dissipating fin has a width f and satisfies: 10 ⁇ f ⁇ 11 mm.
  • an air conditioner comprising the parallel flow heat exchanger as described above is provided.
  • FIG. 1 is a schematic perspective view of a parallel flow heat exchanger according to an embodiment of the present invention
  • Figure 2 is a partial structural schematic view of the parallel flow heat exchanger of Figure 1;
  • Figure 3 is a plan view of the parallel flow heat exchanger of Figure 2;
  • Figure 4 is a plan view of the flat tube of Figure 3;
  • Figure 5 is a cross-sectional view of the header of Figure 1;
  • Figure 6 is a graph showing the outer diameter and heat exchange amount of the header of the parallel flow heat exchanger according to an embodiment of the present invention, wherein the X axis represents the outer diameter of the header (the outer diameter of the header) The unit of dimension is mm), and the Y axis in the figure indicates the heat exchange amount of the parallel flow heat exchanger (the unit of heat exchange amount is W);
  • Figure 7 is a graph of the outer diameter of the header and the charge of the refrigerant in the parallel flow heat exchanger according to an embodiment of the present invention, wherein the X axis represents the outer diameter of the header (the outer diameter of the header) The unit of size is mm), and the Y axis in the figure indicates the refrigerant charge of the parallel flow heat exchanger (the unit of refrigerant charge is g);
  • Figure 8 is a graph showing the width of the heat dissipating fins and the amount of refrigerant charge in the parallel flow heat exchanger according to an embodiment of the present invention, wherein the X axis indicates the width of the heat dissipating fins (the width of the fins is mm) In the figure, the Y axis represents the heat transfer amount of the parallel flow heat exchanger (the unit of heat exchange amount is W).
  • the collecting tube 120 and the heat dissipating fins 130 are identical to The collecting tube 120 and the heat dissipating fins 130.
  • a parallel flow heat exchanger 100 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
  • a parallel flow heat exchanger 100 includes a plurality of flat tubes 110, two header tubes 120, and a plurality of heat dissipating fins 130.
  • a plurality of flat tubes 110 are spaced apart, and each of the flat tubes 110 is formed with a plurality of heat exchange channels 111 extending along the longitudinal direction of the flat tubes 110, and a plurality of heat exchange channels.
  • 111 is spaced apart along the width direction of the flat tube 110, and two collecting tubes 120 are disposed at two ends of the flat tube 110, and two ends of each heat exchange passage 111 are respectively connected with the corresponding collecting tube 120, and a plurality of heat dissipating fins 130 is disposed between two adjacent flat tubes 110.
  • a plurality of flat tubes 110 are spaced apart in the up and down direction (up and down direction as shown in FIG.
  • each flat tube 110 has a width direction of the flat tube 110 (eg, The front-rear direction shown in FIG. 1 is spaced apart, and each heat exchange passage 111 extends along the length direction of the flat tube 110, and the header 120 is disposed at both ends of the flat tube 110 extending in the longitudinal direction, and each heat exchange Both ends of the passage 111 are in communication with the corresponding header 120.
  • the header 120 on the left side communicates with the left end of the heat exchange passage 111
  • the header 120 on the right side communicates with the right end of the heat exchange passage 111.
  • the heat exchange efficiency of the parallel flow heat exchanger 100 can be improved, the structure of the parallel flow heat exchanger 100 can be simplified, the production materials can be saved, and the production cost can be reduced.
  • the parallel flow heat exchanger 100 can also be applied to a low-power air conditioner, thereby expanding the application range of the parallel flow heat exchanger 100.
  • each of the flat tubes 110 has a height b and satisfies: 1.3 ⁇ b ⁇ 1.4 mm. It has been experimentally verified that when the height of the flat tube 110 is 1.3 ⁇ b ⁇ 1.4 mm, the heat exchange efficiency of the parallel flow heat exchanger 100 is high. Considering that the number of heat exchange passages 111 on the flat tube 110 is also an important parameter affecting the heat exchange efficiency of the parallel flow heat exchanger 100, in a preferred example of the present invention, heat is exchanged on the same flat tube 110. The number of the channels 111 is N and satisfies: 8 ⁇ N ⁇ 10. Thereby, the heat exchange efficiency of the parallel flow heat exchanger 100 can be further improved.
  • the shortest distance between the inner peripheral walls of the adjacent two heat exchange passages 111 is c and satisfies: 0.2 ⁇ c ⁇ 0.28 mm
  • the side surface of the flat tube 110 perpendicular to the height direction of the flat tube 110 is the first side surface 112
  • the shortest distance between the first side surface 112 and the inner peripheral wall of the heat exchange passage 111 is d and satisfies: 0.23 ⁇ d ⁇ 0.31 mm
  • the side surface of the flat tube 110 perpendicular to the width direction of the flat tube 110 is the second side surface 113
  • the shortest distance between the second side surface 113 and the inner peripheral wall of the heat exchange passage 111 is e and satisfies: 0.2 ⁇ e ⁇ 0.7 Mm.
  • the "height direction” may refer to the up and down direction shown in FIG. 4
  • the "width direction” may refer to the front and rear direction shown in FIG.
  • the shortest distance c between the inner peripheral walls of the adjacent two heat exchange passages 111 on the flat tube 110, the first side surface 112 and the inner peripheral wall of the heat exchange passage 111 is a dimensional parameter of the flat tube 110, which has been proved by production practice to be 0.2 ⁇ c ⁇ 0.28 mm, 0.23 ⁇ d ⁇ When 0.31 mm and 0.2 ⁇ e ⁇ 0.7 mm, the flat tube 110 has a simple processing process, good structural strength, and low production cost.
  • the flat tube 110 In order to further simplify the processing of the flat tube 110, optimize the structural strength of the flat tube 110, and reduce the production cost of the flat tube 110, in a preferred example of the present invention, on the same flat tube 110, two adjacent ones are replaced.
  • the shortest distance between the inner peripheral walls of the hot runner 111 is 0.23 ⁇ c ⁇ 0.25 mm. It is verified by experiments that when 0.23 ⁇ c ⁇ 0.25mm, the flat tube 110 has a simpler processing process, better structural strength and lower production cost.
  • the first side 112 is replaced on the same flat tube 110.
  • the shortest distance between the inner peripheral walls of the hot runner 111 is 0.26 ⁇ d ⁇ 0.28 mm. It is verified by experiments that when 0.26 ⁇ d ⁇ 0.28mm, the flat tube 110 has a simpler processing process, better structural strength and lower production cost.
  • the second side 113 is replaced on the same flat tube 110.
  • the shortest distance between the inner peripheral walls of the hot runner 111 is 0.4 ⁇ e ⁇ 0.5 mm. It is verified by experiments that when 0.4 ⁇ e ⁇ 0.5mm, the processing technology of the flat tube 110 is simpler, the structural strength is better, and the production cost is lower.
  • the size of the header 120 is also an important parameter of the heat exchange efficiency and production cost of the parallel flow heat exchanger 100
  • the production cost of the parallel flow heat exchanger 100 is lowered.
  • the outer diameter of the header 120 is m and satisfies: 14 ⁇ m ⁇ 16 mm.
  • the wall thickness of the header 120 is n and satisfies: 1.0 ⁇ n ⁇ 1.2 mm.
  • the width of the heat dissipating fins 130 is greater than or equal to the width of the flat tube 110. Thereby, the heat exchange efficiency of the parallel flow heat exchanger 100 can be further improved.
  • the heat dissipating fins 130 have a width f and satisfy: 10 ⁇ f ⁇ 11 mm. Thereby, not only the heat exchange efficiency of the parallel flow heat exchanger 100 can be improved, but also the production materials can be further saved, and the production cost can be reduced.
  • the height b of the flat tube 110 is 1.3-1.4 mm
  • the number N of heat exchange passages 111 is 8-10.
  • the shortest distance c between the inner peripheral walls of the adjacent two heat exchange passages 111 is 0.2-0.28 mm
  • the shortest distance d between the first side surface 112 and the inner peripheral wall of the heat exchange passage 111 is 0.26-0.28 mm
  • the second The shortest distance e between the side surface 113 and the inner peripheral wall of the heat exchange passage 111 is 0.4-0.5 mm
  • the wall thickness n of the header 120 is 1.0-1.2 mm.
  • the 6 is a graph of the outer diameter of the header 120 and the heat exchange amount, in which the X axis represents the outer diameter of the header 120 (the outer diameter of the header 120 is in mm), and the Y axis represents parallel.
  • the amount of heat exchange of the flow heat exchanger 100 (the unit of heat exchange amount is W).
  • the heat exchange amount of the parallel flow heat exchanger 100 increases as the outer diameter of the header 120 increases; when the header 120 When the outer diameter m is 14-16 mm, the heat exchange amount of the parallel flow heat exchanger 100 is maintained within the range of 4500-4580 W; when the outer diameter of the header 120 is m16 mm, the heat exchange of the parallel flow heat exchanger 100 The amount is maintained at around 4550W;
  • the refrigerant charge amount of the parallel flow heat exchanger 100 (the unit of the refrigerant charge amount is g). As can be seen from the figure, the refrigerant charge amount of the parallel flow heat exchanger 100 is proportional to the outer diameter of the header 120. That is, the refrigerant charge amount increases as the outer diameter of the header 120 increases.
  • the heat exchange amount of the parallel flow heat exchanger 100 is maintained at 4550 W.
  • the outer diameter dimension of the header 120 has little effect on the heat exchange efficiency of the parallel flow heat exchanger 100.
  • the parallel heat exchanger 100 can ensure a large heat exchange amount and save production. Use materials to reduce production costs.
  • the 8 is a graph showing the width and heat exchange amount of the heat dissipating fin 130.
  • the X axis indicates the width of the heat dissipating fin 130 (the width of the heat dissipating fin 130 is in mm), and the Y axis indicates the parallel flow heat exchanger.
  • the heat exchange amount of 100 (the unit of heat exchange amount is W). As can be seen from the figure, when the width f of the heat dissipating fins 130 is 10-11 mm, the heat exchange amount of the parallel flow heat exchanger 100 is maintained at a relatively high range.
  • the parallel flow heat exchanger 100 has not only a simple structure, a low production cost, but also a high heat exchange efficiency.
  • An air conditioner according to an embodiment of the present invention includes the parallel flow heat exchanger 100 as described above.
  • the production material reduces the production cost and also improves the heat exchange efficiency of the parallel flow heat exchanger 100.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur à écoulement parallèle (100) et un climatiseur pourvu de celui-ci. L'échangeur de chaleur à écoulement parallèle (100) comprend : une pluralité de tubes plats espacés (110), la largeur de chaque tube plat (110) étant a et a = 8 mm, la hauteur de chaque tube plat (110) étant b et 1≤b≤2mm, une pluralité de canaux d'échange de chaleur (111) s'étendant dans le sens de la longueur du tube plat étant disposés dans chaque tube plat (110), et la pluralité de canaux d'échange de chaleur (111) étant espacés dans le sens de la largeur du tube plat (110); deux collecteurs (120), les deux extrémités de chaque canal d'échange de chaleur (111) étant respectivement en communication avec les collecteurs correspondants (120); et une pluralité d'ailettes de dissipation de chaleur (130) disposées entre deux tubes plats adjacents (110).
PCT/CN2015/074393 2014-11-11 2015-03-17 Échangeur de chaleur à écoulement parallèle et climatiseur pourvu de celui-ci WO2016074399A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201420671558.8 2014-11-11
CN201420671558.8U CN204313538U (zh) 2014-11-11 2014-11-11 平行流换热器及具有其的空调器

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WO2016074399A1 true WO2016074399A1 (fr) 2016-05-19

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WO (1) WO2016074399A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113720174A (zh) * 2019-05-05 2021-11-30 浙江三花智能控制股份有限公司 微通道换热器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1981168A (zh) * 2004-07-05 2007-06-13 昭和电工株式会社 蒸发器
JP2009229025A (ja) * 2008-03-25 2009-10-08 Showa Denko Kk オイルクーラ
CN202915789U (zh) * 2012-08-26 2013-05-01 浙江富源制冷设备有限公司 一种微通道换热器扁管

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1981168A (zh) * 2004-07-05 2007-06-13 昭和电工株式会社 蒸发器
JP2009229025A (ja) * 2008-03-25 2009-10-08 Showa Denko Kk オイルクーラ
CN202915789U (zh) * 2012-08-26 2013-05-01 浙江富源制冷设备有限公司 一种微通道换热器扁管

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